Cinglés du Ventoux from Bèdoin

Three ascents of Ventoux in one day. You take on the Bedoin side first while your legs are fresh, then descend to Malaucene and climb the irregular second route. After a second descent, you finish with the Sault approach, the most gradual, which is a serious challenge by that point.

It's an endurance challenge that many riders specifically come for. The distance and elevation are serious, but the structure works in your favour: hardest first, easiest last. By the third summit you know every bend above Chalet Reynard.